Changeset 10b866d for history.c

Timestamp:

Jul 8, 2002, 10:37:21 PM (21 years ago)

Author:

Erik Nygren <nygren@mit.edu>

Branches:

master, barnowl_perlaim, debian, owl, release-1.10, release-1.4, release-1.5, release-1.6, release-1.7, release-1.8, release-1.9

Children:

e1c4636

Parents:

8df36cc

Message:

* Fixed preservation of e->dotsend across owl_editwin_clear().

* Added history for multiline edit windows (eg, for zephyr composition).
  The M-n and M-p keys will cycle through the history ring.
  In particular, it is now possible to edit the command line
  of a zephyr being composed:  C-c it and restart it
  and then M-p to get the aborted composition back.

File:

• history.c (modified) (5 diffs)

history.c

@@ -5 +5 @@
 void owl_history_init(owl_history *h) {
   owl_list_create(&(h->hist));
-  h->cur=0;
-  h->touched=0;
-  h->partial=0;
+  h->cur=0;                     /* current position in history */
+  h->touched=0;                 /* whether we've gone into history */
+  h->partial=0;                 /* is the 0th element is partially composed? */
 }
 
 char *owl_history_get_prev(owl_history *h) {
+
+  if (!h) return NULL;
   h->touched=1;
 
@@ -20 +22 @@
 
   h->cur++;
+
   return(owl_list_get_element(&(h->hist), h->cur));
 }
 
 char *owl_history_get_next(owl_history *h) {
+  if (!h) return NULL;
   if (owl_list_get_size(&(h->hist))==0) return(NULL);
-
   if (h->cur==0) {
     return(NULL);
@@ -37 +40 @@
   int size;
 
+  if (!h) return;
+
   /* if partial is set, remove the first entry first */
   if (h->partial) {
     owl_list_remove_element(&(h->hist), 0);
   }
-    
+
   /* if we've reached the max history size, pop off the last element */
   size=owl_list_get_size(&(h->hist));
@@ -54 +59 @@
 
 void owl_history_set_partial(owl_history *h) {
+  if (!h) return;
   h->partial=1;
 }
 
 void owl_history_reset(owl_history *h) {
+  if (!h) return;
   h->cur=0;
   h->touched=0;
@@ -64 +71 @@
 
 int owl_history_is_touched(owl_history *h) {
+  if (!h) return(0);
   if (h->touched) return(1);
   return(0);